Contact angle of copper-bearing shales using the sessile drop and captive bubble methods in the presence of selected frothers
this study the influence of selected reagent types and concentrations on measurements of contact angle of copper-bearing shales coming from Legnicko-Głogowski Copper Region (Rudna Mine) mined by KGHM Polska Miedź S.A. company was analysed. The measurements of contact angle using both the sessile drop and captive bubble methods demonstrate that the presence of acetal and pyridine slightly modifies hydrophobicity of copper-bearing shale surface. Both foregoing methods of measurement demonstrate that the contact angle is in inverse proportion to the increasing concentration of the tested reagents. None of the tested reagents (neither acetal nor pyridine) may be classified as the collecting reagents, because they do not increase hydrophobicity of copper-bearing shales, and, therefore, they may perform only a frothing function in flotation process. (277.6Kb)
MetadataShow full item record
mailto:?subject=I recommend a publication at CeON Repository&body=I recommend a publication “Contact angle of copper-bearing shales using the sessile drop and captive bubble methods in the presence of selected frothers” available at CeON Repository [https://depot.ceon.pl/handle/123456789/10064]. Recommend
This paper describes the measurement of contact angle of copper-bearing shales. The values of advancing and receding contact angles were determined using the sessile drop and captive bubble methods in the presence of aqueous solutions of acetal and pyridine and distilled water. Both methods demonstrated that the tested substances had only minor impact on the surface hydrophobicity of copper-bearing shales expressed by contact angle. The tests carried out proved that neither acetal nor pyridine may be classified to the collecting reagents because none of them improves hydrophobicity of copper-bearing shales. These reagents are only flotation frothers.
- Artykuły / Articles